they are waiting for the u.s. government to collapse and when it does they say they will take charge. >> we are really working for the constitutional government, limited government. >>reporter: group follows common-law. believes driver's license not needed and paying tax is operational. >> matter of us being the solve republic we are to rule ourselves. >>reporter: this is a ji gap particular joke. he tracks the activity and republic leadership states it's not part of the sovereign movement. any militia and doesn't promote violence but he says the belief fit the movement ideology. >> they have the same set of ideas. the government is not legitimate. it is engaged in a massive rip off of the citizen citizens. >> believing in this ideology as you unusual as it seems is not a crime. >>reporter: this special agent oversees the task force in northern california. he says the fbi doesn't get involved with sovereigns unless there's evidence of illegal activity. >> it certainly a priority. the biggest concern that i have is